2017
DOI: 10.48550/arxiv.1704.01954
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Dynamically generated quadrature and photon-number variances for Gaussian states

Moorad Alexanian

Abstract: We calculate exactly the quantum mechanical, temporal Wigner quasiprobability density for a single-mode, degenerate parametric amplifier for a system in the Gaussian state, viz., a displaced-squeezed thermal state. The Wigner function allows us to calculate the fluctuations in photon number and the quadrature variance. We contrast the difference between the nonclassicality criteria, which is independent of the displacement parameter α, based on the Glauber-Sudarshan quasiprobability distribution P (β) and the … Show more

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